A computer-implemented method includes receiving toolpath data for machining a workpiece with a tool along a toolpath. The tool is comprised by a machine tool that is numerically controlled by a control device. Machine code for the machine tool corresponding to the toolpath data is received. A map linking at least one item of the toolpath data and at least one item of the machine code corresponding to the least one item of the toolpath data is created. At least one first item of the toolpath data and one or more second items of the machine code corresponding to the at least one first item are displayed to a user using the created map. A control device and a machine tool arranged and configured to execute the computer-implemented method are also provided.

A numerical controller comprises a restart position candidate setting unit configured to store information on a block serving as a restart position candidate where machining is to be restarted, on the basis of a result of an analysis of a machining program, a block head position drawing unit configured to draw, when the machining is interrupted, a machining position corresponding to a head of the block serving as a restart position candidate stored by the restart position candidate setting unit, on the machining path displayed on a machining path graphic screen, and a restart block setting unit configured to set a block corresponding to a machining position designated by a user from among the machining positions drawn by the block head position drawing unit, as a restart block.

This display device comprises a determination unit and a display unit 18. The determination unit monitors the trajectory difference between an actual trajectory and a trajectory in a machining program for a spindle, and: determines, with regard to a site at which the trajectory difference is small and the actual speed of the spindle is small relative to the maximum value setting for a command speed, whether accuracy can be maintained even if the command speed is increased; and/or determines, with regard to a site at which the trajectory difference is small and the actual acceleration of the spindle is small relative to the maximum value setting for a command acceleration, whether accuracy can be maintained even if the command acceleration is increased. The display unit 18 displays the site in a highlighted manner.

The objective of the present invention is to display a correspondence relationship between a specific location in a machining program and specific position in a machining trajectory in such a way as to be immediately understandable, in a display device capable of simultaneously displaying the machining program and the machining trajectory. Acquired position data of a tool, and a character string from a machining program are saved in association with one another, a part of interest of a displayed tool machining trajectory is selected, and a program block comprising a character string from the machining program associated with the selected part of the machining trajectory is selected and is displayed on the displayed machining program, thereby making the relationship between the operation of the tool and the machining program more readily understandable.

A numerical controller comprises a restart position candidate setting unit configured to store information on a block serving as a restart position candidate where machining is to be restarted, on the basis of a result of an analysis of a machining program, a block head position drawing unit configured to draw, when the machining is interrupted, a machining position corresponding to a head of the block serving as a restart position candidate stored by the restart position candidate setting unit, on the machining path displayed on a machining path graphic screen, and a restart block setting unit configured to set a block corresponding to a machining position designated by a user from among the machining positions drawn by the block head position drawing unit, as a restart block.